Thanks for that link inertia. After reading the description of that roller in the link I realized that the ball stem pivots and that what I thought were bent stems are really just frozen in place from years of debris, gunk, rust, etc......after soaking them with PB Blaster and putting them in the vise I was able to work them loose. Only question I have now is how loose should they be? It still takes a firm grip to make them pivot.
